I've been messing around with this lately.

The setup from top to bottom:

Barrel swivel
Split ring with Colorado blade
Barrel swivel
Swiwash hook

I'd like to hear from those who fish blades under floats what your perfered setup is? such as do you like to run an inline weight or do you rig it like drift gear with a snap swivel and a slinky or lead, and then a leader to your spinner? Also, what is optimum leader length? And how bout blade size? I assume #4 and #5 will cover most situations. And who makes a good Colorado blade with genuine gold or silver plating?

I can fish a weighted spinner just fine but what I like about fishing the Colorado blade under a float is that it allows me to essentially walk the spinner down slots that are below me as opposed to swinging out of them.